Arnaldo Carvalho de Melo | f8a9530 | 2011-01-30 10:46:46 -0200 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2011, Red Hat Inc, Arnaldo Carvalho de Melo <acme@redhat.com> |
| 3 | * |
| 4 | * Parts came from builtin-{top,stat,record}.c, see those files for further |
| 5 | * copyright notes. |
| 6 | * |
| 7 | * Released under the GPL v2. (and only v2, not any later version) |
| 8 | */ |
Arnaldo Carvalho de Melo | a8c9ae1 | 2011-11-05 08:41:51 -0200 | [diff] [blame] | 9 | #include "util.h" |
| 10 | #include "debugfs.h" |
Arnaldo Carvalho de Melo | 5c58104 | 2011-01-11 22:30:02 -0200 | [diff] [blame] | 11 | #include <poll.h> |
Arnaldo Carvalho de Melo | f8a9530 | 2011-01-30 10:46:46 -0200 | [diff] [blame] | 12 | #include "cpumap.h" |
| 13 | #include "thread_map.h" |
Namhyung Kim | 12864b3 | 2012-04-26 14:15:22 +0900 | [diff] [blame] | 14 | #include "target.h" |
Arnaldo Carvalho de Melo | 361c99a | 2011-01-11 20:56:53 -0200 | [diff] [blame] | 15 | #include "evlist.h" |
| 16 | #include "evsel.h" |
Arnaldo Carvalho de Melo | 35b9d88 | 2011-11-09 08:47:15 -0200 | [diff] [blame] | 17 | #include <unistd.h> |
Arnaldo Carvalho de Melo | 361c99a | 2011-01-11 20:56:53 -0200 | [diff] [blame] | 18 | |
Arnaldo Carvalho de Melo | 50d08e4 | 2011-11-04 09:10:59 -0200 | [diff] [blame] | 19 | #include "parse-events.h" |
| 20 | |
Arnaldo Carvalho de Melo | f8a9530 | 2011-01-30 10:46:46 -0200 | [diff] [blame] | 21 | #include <sys/mman.h> |
| 22 | |
Arnaldo Carvalho de Melo | 70db753 | 2011-01-12 22:39:13 -0200 | [diff] [blame] | 23 | #include <linux/bitops.h> |
| 24 | #include <linux/hash.h> |
| 25 | |
Arnaldo Carvalho de Melo | f8a9530 | 2011-01-30 10:46:46 -0200 | [diff] [blame] | 26 | #define FD(e, x, y) (*(int *)xyarray__entry(e->fd, x, y)) |
Arnaldo Carvalho de Melo | a91e543 | 2011-03-10 11:15:54 -0300 | [diff] [blame] | 27 | #define SID(e, x, y) xyarray__entry(e->sample_id, x, y) |
Arnaldo Carvalho de Melo | f8a9530 | 2011-01-30 10:46:46 -0200 | [diff] [blame] | 28 | |
Arnaldo Carvalho de Melo | 7e2ed09 | 2011-01-30 11:59:43 -0200 | [diff] [blame] | 29 | void perf_evlist__init(struct perf_evlist *evlist, struct cpu_map *cpus, |
| 30 | struct thread_map *threads) |
Arnaldo Carvalho de Melo | ef1d1af | 2011-01-18 21:41:45 -0200 | [diff] [blame] | 31 | { |
| 32 | int i; |
| 33 | |
| 34 | for (i = 0; i < PERF_EVLIST__HLIST_SIZE; ++i) |
| 35 | INIT_HLIST_HEAD(&evlist->heads[i]); |
| 36 | INIT_LIST_HEAD(&evlist->entries); |
Arnaldo Carvalho de Melo | 7e2ed09 | 2011-01-30 11:59:43 -0200 | [diff] [blame] | 37 | perf_evlist__set_maps(evlist, cpus, threads); |
Arnaldo Carvalho de Melo | 35b9d88 | 2011-11-09 08:47:15 -0200 | [diff] [blame] | 38 | evlist->workload.pid = -1; |
Arnaldo Carvalho de Melo | ef1d1af | 2011-01-18 21:41:45 -0200 | [diff] [blame] | 39 | } |
| 40 | |
Arnaldo Carvalho de Melo | 7e2ed09 | 2011-01-30 11:59:43 -0200 | [diff] [blame] | 41 | struct perf_evlist *perf_evlist__new(struct cpu_map *cpus, |
| 42 | struct thread_map *threads) |
Arnaldo Carvalho de Melo | 361c99a | 2011-01-11 20:56:53 -0200 | [diff] [blame] | 43 | { |
| 44 | struct perf_evlist *evlist = zalloc(sizeof(*evlist)); |
| 45 | |
Arnaldo Carvalho de Melo | ef1d1af | 2011-01-18 21:41:45 -0200 | [diff] [blame] | 46 | if (evlist != NULL) |
Arnaldo Carvalho de Melo | 7e2ed09 | 2011-01-30 11:59:43 -0200 | [diff] [blame] | 47 | perf_evlist__init(evlist, cpus, threads); |
Arnaldo Carvalho de Melo | 361c99a | 2011-01-11 20:56:53 -0200 | [diff] [blame] | 48 | |
| 49 | return evlist; |
| 50 | } |
| 51 | |
Arnaldo Carvalho de Melo | 0f82ebc | 2011-11-08 14:41:57 -0200 | [diff] [blame] | 52 | void perf_evlist__config_attrs(struct perf_evlist *evlist, |
| 53 | struct perf_record_opts *opts) |
| 54 | { |
Namhyung Kim | 5090c6a | 2012-03-16 17:42:20 +0900 | [diff] [blame] | 55 | struct perf_evsel *evsel, *first; |
Arnaldo Carvalho de Melo | 0f82ebc | 2011-11-08 14:41:57 -0200 | [diff] [blame] | 56 | |
| 57 | if (evlist->cpus->map[0] < 0) |
| 58 | opts->no_inherit = true; |
| 59 | |
Arnaldo Carvalho de Melo | 0c21f73 | 2012-08-14 16:42:15 -0300 | [diff] [blame] | 60 | first = perf_evlist__first(evlist); |
Namhyung Kim | 5090c6a | 2012-03-16 17:42:20 +0900 | [diff] [blame] | 61 | |
Arnaldo Carvalho de Melo | 0f82ebc | 2011-11-08 14:41:57 -0200 | [diff] [blame] | 62 | list_for_each_entry(evsel, &evlist->entries, node) { |
Namhyung Kim | 5090c6a | 2012-03-16 17:42:20 +0900 | [diff] [blame] | 63 | perf_evsel__config(evsel, opts, first); |
Arnaldo Carvalho de Melo | 0f82ebc | 2011-11-08 14:41:57 -0200 | [diff] [blame] | 64 | |
| 65 | if (evlist->nr_entries > 1) |
| 66 | evsel->attr.sample_type |= PERF_SAMPLE_ID; |
| 67 | } |
| 68 | } |
| 69 | |
Arnaldo Carvalho de Melo | 361c99a | 2011-01-11 20:56:53 -0200 | [diff] [blame] | 70 | static void perf_evlist__purge(struct perf_evlist *evlist) |
| 71 | { |
| 72 | struct perf_evsel *pos, *n; |
| 73 | |
| 74 | list_for_each_entry_safe(pos, n, &evlist->entries, node) { |
| 75 | list_del_init(&pos->node); |
| 76 | perf_evsel__delete(pos); |
| 77 | } |
| 78 | |
| 79 | evlist->nr_entries = 0; |
| 80 | } |
| 81 | |
Arnaldo Carvalho de Melo | ef1d1af | 2011-01-18 21:41:45 -0200 | [diff] [blame] | 82 | void perf_evlist__exit(struct perf_evlist *evlist) |
| 83 | { |
| 84 | free(evlist->mmap); |
| 85 | free(evlist->pollfd); |
| 86 | evlist->mmap = NULL; |
| 87 | evlist->pollfd = NULL; |
| 88 | } |
| 89 | |
Arnaldo Carvalho de Melo | 361c99a | 2011-01-11 20:56:53 -0200 | [diff] [blame] | 90 | void perf_evlist__delete(struct perf_evlist *evlist) |
| 91 | { |
| 92 | perf_evlist__purge(evlist); |
Arnaldo Carvalho de Melo | ef1d1af | 2011-01-18 21:41:45 -0200 | [diff] [blame] | 93 | perf_evlist__exit(evlist); |
Arnaldo Carvalho de Melo | 361c99a | 2011-01-11 20:56:53 -0200 | [diff] [blame] | 94 | free(evlist); |
| 95 | } |
| 96 | |
| 97 | void perf_evlist__add(struct perf_evlist *evlist, struct perf_evsel *entry) |
| 98 | { |
| 99 | list_add_tail(&entry->node, &evlist->entries); |
| 100 | ++evlist->nr_entries; |
| 101 | } |
| 102 | |
Jiri Olsa | 0529bc1 | 2012-01-27 15:34:20 +0100 | [diff] [blame] | 103 | void perf_evlist__splice_list_tail(struct perf_evlist *evlist, |
| 104 | struct list_head *list, |
| 105 | int nr_entries) |
Arnaldo Carvalho de Melo | 50d08e4 | 2011-11-04 09:10:59 -0200 | [diff] [blame] | 106 | { |
| 107 | list_splice_tail(list, &evlist->entries); |
| 108 | evlist->nr_entries += nr_entries; |
| 109 | } |
| 110 | |
Arnaldo Carvalho de Melo | 63dab22 | 2012-08-14 16:35:48 -0300 | [diff] [blame] | 111 | void __perf_evlist__set_leader(struct list_head *list) |
| 112 | { |
| 113 | struct perf_evsel *evsel, *leader; |
| 114 | |
| 115 | leader = list_entry(list->next, struct perf_evsel, node); |
| 116 | leader->leader = NULL; |
| 117 | |
| 118 | list_for_each_entry(evsel, list, node) { |
| 119 | if (evsel != leader) |
| 120 | evsel->leader = leader; |
| 121 | } |
| 122 | } |
| 123 | |
| 124 | void perf_evlist__set_leader(struct perf_evlist *evlist) |
Jiri Olsa | 6a4bb04 | 2012-08-08 12:22:36 +0200 | [diff] [blame] | 125 | { |
| 126 | if (evlist->nr_entries) |
Arnaldo Carvalho de Melo | 63dab22 | 2012-08-14 16:35:48 -0300 | [diff] [blame] | 127 | __perf_evlist__set_leader(&evlist->entries); |
Jiri Olsa | 6a4bb04 | 2012-08-08 12:22:36 +0200 | [diff] [blame] | 128 | } |
| 129 | |
Arnaldo Carvalho de Melo | 361c99a | 2011-01-11 20:56:53 -0200 | [diff] [blame] | 130 | int perf_evlist__add_default(struct perf_evlist *evlist) |
| 131 | { |
| 132 | struct perf_event_attr attr = { |
| 133 | .type = PERF_TYPE_HARDWARE, |
| 134 | .config = PERF_COUNT_HW_CPU_CYCLES, |
| 135 | }; |
Joerg Roedel | 1aed267 | 2012-01-04 17:54:20 +0100 | [diff] [blame] | 136 | struct perf_evsel *evsel; |
Arnaldo Carvalho de Melo | 361c99a | 2011-01-11 20:56:53 -0200 | [diff] [blame] | 137 | |
Joerg Roedel | 1aed267 | 2012-01-04 17:54:20 +0100 | [diff] [blame] | 138 | event_attr_init(&attr); |
| 139 | |
| 140 | evsel = perf_evsel__new(&attr, 0); |
Arnaldo Carvalho de Melo | 361c99a | 2011-01-11 20:56:53 -0200 | [diff] [blame] | 141 | if (evsel == NULL) |
Stephane Eranian | cc2d86b | 2011-06-07 18:19:36 +0200 | [diff] [blame] | 142 | goto error; |
| 143 | |
| 144 | /* use strdup() because free(evsel) assumes name is allocated */ |
| 145 | evsel->name = strdup("cycles"); |
| 146 | if (!evsel->name) |
| 147 | goto error_free; |
Arnaldo Carvalho de Melo | 361c99a | 2011-01-11 20:56:53 -0200 | [diff] [blame] | 148 | |
| 149 | perf_evlist__add(evlist, evsel); |
| 150 | return 0; |
Stephane Eranian | cc2d86b | 2011-06-07 18:19:36 +0200 | [diff] [blame] | 151 | error_free: |
| 152 | perf_evsel__delete(evsel); |
| 153 | error: |
| 154 | return -ENOMEM; |
Arnaldo Carvalho de Melo | 361c99a | 2011-01-11 20:56:53 -0200 | [diff] [blame] | 155 | } |
Arnaldo Carvalho de Melo | 5c58104 | 2011-01-11 22:30:02 -0200 | [diff] [blame] | 156 | |
Arnaldo Carvalho de Melo | e60fc84 | 2012-10-03 11:50:55 -0300 | [diff] [blame] | 157 | static int perf_evlist__add_attrs(struct perf_evlist *evlist, |
| 158 | struct perf_event_attr *attrs, size_t nr_attrs) |
Arnaldo Carvalho de Melo | 50d08e4 | 2011-11-04 09:10:59 -0200 | [diff] [blame] | 159 | { |
| 160 | struct perf_evsel *evsel, *n; |
| 161 | LIST_HEAD(head); |
| 162 | size_t i; |
| 163 | |
| 164 | for (i = 0; i < nr_attrs; i++) { |
| 165 | evsel = perf_evsel__new(attrs + i, evlist->nr_entries + i); |
| 166 | if (evsel == NULL) |
| 167 | goto out_delete_partial_list; |
| 168 | list_add_tail(&evsel->node, &head); |
| 169 | } |
| 170 | |
| 171 | perf_evlist__splice_list_tail(evlist, &head, nr_attrs); |
| 172 | |
| 173 | return 0; |
| 174 | |
| 175 | out_delete_partial_list: |
| 176 | list_for_each_entry_safe(evsel, n, &head, node) |
| 177 | perf_evsel__delete(evsel); |
| 178 | return -1; |
| 179 | } |
| 180 | |
Arnaldo Carvalho de Melo | 79695e1 | 2012-05-30 13:53:54 -0300 | [diff] [blame] | 181 | int __perf_evlist__add_default_attrs(struct perf_evlist *evlist, |
| 182 | struct perf_event_attr *attrs, size_t nr_attrs) |
| 183 | { |
| 184 | size_t i; |
| 185 | |
| 186 | for (i = 0; i < nr_attrs; i++) |
| 187 | event_attr_init(attrs + i); |
| 188 | |
| 189 | return perf_evlist__add_attrs(evlist, attrs, nr_attrs); |
| 190 | } |
| 191 | |
Arnaldo Carvalho de Melo | da37896 | 2012-06-27 13:08:42 -0300 | [diff] [blame] | 192 | struct perf_evsel * |
| 193 | perf_evlist__find_tracepoint_by_id(struct perf_evlist *evlist, int id) |
Arnaldo Carvalho de Melo | ee29be6 | 2011-11-28 17:57:40 -0200 | [diff] [blame] | 194 | { |
| 195 | struct perf_evsel *evsel; |
| 196 | |
| 197 | list_for_each_entry(evsel, &evlist->entries, node) { |
| 198 | if (evsel->attr.type == PERF_TYPE_TRACEPOINT && |
| 199 | (int)evsel->attr.config == id) |
| 200 | return evsel; |
| 201 | } |
| 202 | |
| 203 | return NULL; |
| 204 | } |
| 205 | |
Arnaldo Carvalho de Melo | 39876e7 | 2012-10-03 11:40:22 -0300 | [diff] [blame] | 206 | int perf_evlist__add_newtp(struct perf_evlist *evlist, |
| 207 | const char *sys, const char *name, void *handler) |
| 208 | { |
| 209 | struct perf_evsel *evsel; |
| 210 | |
| 211 | evsel = perf_evsel__newtp(sys, name, evlist->nr_entries); |
| 212 | if (evsel == NULL) |
| 213 | return -1; |
| 214 | |
| 215 | evsel->handler.func = handler; |
| 216 | perf_evlist__add(evlist, evsel); |
| 217 | return 0; |
| 218 | } |
| 219 | |
Arnaldo Carvalho de Melo | 4152ab3 | 2011-07-25 11:06:19 -0300 | [diff] [blame] | 220 | void perf_evlist__disable(struct perf_evlist *evlist) |
| 221 | { |
| 222 | int cpu, thread; |
| 223 | struct perf_evsel *pos; |
| 224 | |
| 225 | for (cpu = 0; cpu < evlist->cpus->nr; cpu++) { |
| 226 | list_for_each_entry(pos, &evlist->entries, node) { |
| 227 | for (thread = 0; thread < evlist->threads->nr; thread++) |
Namhyung Kim | 55da800 | 2012-05-31 14:51:46 +0900 | [diff] [blame] | 228 | ioctl(FD(pos, cpu, thread), |
| 229 | PERF_EVENT_IOC_DISABLE, 0); |
Arnaldo Carvalho de Melo | 4152ab3 | 2011-07-25 11:06:19 -0300 | [diff] [blame] | 230 | } |
| 231 | } |
| 232 | } |
| 233 | |
David Ahern | 764e16a3 | 2011-08-25 10:17:55 -0600 | [diff] [blame] | 234 | void perf_evlist__enable(struct perf_evlist *evlist) |
| 235 | { |
| 236 | int cpu, thread; |
| 237 | struct perf_evsel *pos; |
| 238 | |
Arnaldo Carvalho de Melo | a14bb7a | 2012-09-26 12:41:14 -0300 | [diff] [blame] | 239 | for (cpu = 0; cpu < cpu_map__nr(evlist->cpus); cpu++) { |
David Ahern | 764e16a3 | 2011-08-25 10:17:55 -0600 | [diff] [blame] | 240 | list_for_each_entry(pos, &evlist->entries, node) { |
| 241 | for (thread = 0; thread < evlist->threads->nr; thread++) |
Namhyung Kim | 55da800 | 2012-05-31 14:51:46 +0900 | [diff] [blame] | 242 | ioctl(FD(pos, cpu, thread), |
| 243 | PERF_EVENT_IOC_ENABLE, 0); |
David Ahern | 764e16a3 | 2011-08-25 10:17:55 -0600 | [diff] [blame] | 244 | } |
| 245 | } |
| 246 | } |
| 247 | |
Arnaldo Carvalho de Melo | 806fb63 | 2011-11-29 08:05:52 -0200 | [diff] [blame] | 248 | static int perf_evlist__alloc_pollfd(struct perf_evlist *evlist) |
Arnaldo Carvalho de Melo | 5c58104 | 2011-01-11 22:30:02 -0200 | [diff] [blame] | 249 | { |
Arnaldo Carvalho de Melo | a14bb7a | 2012-09-26 12:41:14 -0300 | [diff] [blame] | 250 | int nfds = cpu_map__nr(evlist->cpus) * evlist->threads->nr * evlist->nr_entries; |
Arnaldo Carvalho de Melo | 5c58104 | 2011-01-11 22:30:02 -0200 | [diff] [blame] | 251 | evlist->pollfd = malloc(sizeof(struct pollfd) * nfds); |
| 252 | return evlist->pollfd != NULL ? 0 : -ENOMEM; |
| 253 | } |
Arnaldo Carvalho de Melo | 70082dd | 2011-01-12 17:03:24 -0200 | [diff] [blame] | 254 | |
| 255 | void perf_evlist__add_pollfd(struct perf_evlist *evlist, int fd) |
| 256 | { |
| 257 | fcntl(fd, F_SETFL, O_NONBLOCK); |
| 258 | evlist->pollfd[evlist->nr_fds].fd = fd; |
| 259 | evlist->pollfd[evlist->nr_fds].events = POLLIN; |
| 260 | evlist->nr_fds++; |
| 261 | } |
Arnaldo Carvalho de Melo | 70db753 | 2011-01-12 22:39:13 -0200 | [diff] [blame] | 262 | |
Arnaldo Carvalho de Melo | a91e543 | 2011-03-10 11:15:54 -0300 | [diff] [blame] | 263 | static void perf_evlist__id_hash(struct perf_evlist *evlist, |
| 264 | struct perf_evsel *evsel, |
| 265 | int cpu, int thread, u64 id) |
Arnaldo Carvalho de Melo | f8a9530 | 2011-01-30 10:46:46 -0200 | [diff] [blame] | 266 | { |
Arnaldo Carvalho de Melo | 3d3b5e9 | 2011-03-04 22:29:39 -0300 | [diff] [blame] | 267 | int hash; |
| 268 | struct perf_sample_id *sid = SID(evsel, cpu, thread); |
| 269 | |
| 270 | sid->id = id; |
| 271 | sid->evsel = evsel; |
| 272 | hash = hash_64(sid->id, PERF_EVLIST__HLIST_BITS); |
| 273 | hlist_add_head(&sid->node, &evlist->heads[hash]); |
| 274 | } |
| 275 | |
Arnaldo Carvalho de Melo | a91e543 | 2011-03-10 11:15:54 -0300 | [diff] [blame] | 276 | void perf_evlist__id_add(struct perf_evlist *evlist, struct perf_evsel *evsel, |
| 277 | int cpu, int thread, u64 id) |
| 278 | { |
| 279 | perf_evlist__id_hash(evlist, evsel, cpu, thread, id); |
| 280 | evsel->id[evsel->ids++] = id; |
| 281 | } |
| 282 | |
| 283 | static int perf_evlist__id_add_fd(struct perf_evlist *evlist, |
| 284 | struct perf_evsel *evsel, |
| 285 | int cpu, int thread, int fd) |
Arnaldo Carvalho de Melo | 3d3b5e9 | 2011-03-04 22:29:39 -0300 | [diff] [blame] | 286 | { |
Arnaldo Carvalho de Melo | f8a9530 | 2011-01-30 10:46:46 -0200 | [diff] [blame] | 287 | u64 read_data[4] = { 0, }; |
Arnaldo Carvalho de Melo | 3d3b5e9 | 2011-03-04 22:29:39 -0300 | [diff] [blame] | 288 | int id_idx = 1; /* The first entry is the counter value */ |
Arnaldo Carvalho de Melo | f8a9530 | 2011-01-30 10:46:46 -0200 | [diff] [blame] | 289 | |
| 290 | if (!(evsel->attr.read_format & PERF_FORMAT_ID) || |
| 291 | read(fd, &read_data, sizeof(read_data)) == -1) |
| 292 | return -1; |
| 293 | |
| 294 | if (evsel->attr.read_format & PERF_FORMAT_TOTAL_TIME_ENABLED) |
| 295 | ++id_idx; |
| 296 | if (evsel->attr.read_format & PERF_FORMAT_TOTAL_TIME_RUNNING) |
| 297 | ++id_idx; |
| 298 | |
Arnaldo Carvalho de Melo | a91e543 | 2011-03-10 11:15:54 -0300 | [diff] [blame] | 299 | perf_evlist__id_add(evlist, evsel, cpu, thread, read_data[id_idx]); |
Arnaldo Carvalho de Melo | f8a9530 | 2011-01-30 10:46:46 -0200 | [diff] [blame] | 300 | return 0; |
| 301 | } |
| 302 | |
Arnaldo Carvalho de Melo | 70db753 | 2011-01-12 22:39:13 -0200 | [diff] [blame] | 303 | struct perf_evsel *perf_evlist__id2evsel(struct perf_evlist *evlist, u64 id) |
| 304 | { |
| 305 | struct hlist_head *head; |
| 306 | struct hlist_node *pos; |
| 307 | struct perf_sample_id *sid; |
| 308 | int hash; |
| 309 | |
| 310 | if (evlist->nr_entries == 1) |
Arnaldo Carvalho de Melo | 0c21f73 | 2012-08-14 16:42:15 -0300 | [diff] [blame] | 311 | return perf_evlist__first(evlist); |
Arnaldo Carvalho de Melo | 70db753 | 2011-01-12 22:39:13 -0200 | [diff] [blame] | 312 | |
| 313 | hash = hash_64(id, PERF_EVLIST__HLIST_BITS); |
| 314 | head = &evlist->heads[hash]; |
| 315 | |
| 316 | hlist_for_each_entry(sid, pos, head, node) |
| 317 | if (sid->id == id) |
| 318 | return sid->evsel; |
Namhyung Kim | 30e68bc | 2012-02-20 10:47:26 +0900 | [diff] [blame] | 319 | |
| 320 | if (!perf_evlist__sample_id_all(evlist)) |
Arnaldo Carvalho de Melo | 0c21f73 | 2012-08-14 16:42:15 -0300 | [diff] [blame] | 321 | return perf_evlist__first(evlist); |
Namhyung Kim | 30e68bc | 2012-02-20 10:47:26 +0900 | [diff] [blame] | 322 | |
Arnaldo Carvalho de Melo | 70db753 | 2011-01-12 22:39:13 -0200 | [diff] [blame] | 323 | return NULL; |
| 324 | } |
Arnaldo Carvalho de Melo | 04391de | 2011-01-15 10:40:59 -0200 | [diff] [blame] | 325 | |
Arnaldo Carvalho de Melo | aece948 | 2011-05-15 09:39:00 -0300 | [diff] [blame] | 326 | union perf_event *perf_evlist__mmap_read(struct perf_evlist *evlist, int idx) |
Arnaldo Carvalho de Melo | 04391de | 2011-01-15 10:40:59 -0200 | [diff] [blame] | 327 | { |
Arnaldo Carvalho de Melo | aece948 | 2011-05-15 09:39:00 -0300 | [diff] [blame] | 328 | struct perf_mmap *md = &evlist->mmap[idx]; |
Arnaldo Carvalho de Melo | 04391de | 2011-01-15 10:40:59 -0200 | [diff] [blame] | 329 | unsigned int head = perf_mmap__read_head(md); |
| 330 | unsigned int old = md->prev; |
| 331 | unsigned char *data = md->base + page_size; |
Arnaldo Carvalho de Melo | 8115d60 | 2011-01-29 14:01:45 -0200 | [diff] [blame] | 332 | union perf_event *event = NULL; |
Arnaldo Carvalho de Melo | 04391de | 2011-01-15 10:40:59 -0200 | [diff] [blame] | 333 | |
Arnaldo Carvalho de Melo | 7bb4115 | 2011-01-29 09:08:13 -0200 | [diff] [blame] | 334 | if (evlist->overwrite) { |
Arnaldo Carvalho de Melo | 04391de | 2011-01-15 10:40:59 -0200 | [diff] [blame] | 335 | /* |
Arnaldo Carvalho de Melo | 7bb4115 | 2011-01-29 09:08:13 -0200 | [diff] [blame] | 336 | * If we're further behind than half the buffer, there's a chance |
| 337 | * the writer will bite our tail and mess up the samples under us. |
| 338 | * |
| 339 | * If we somehow ended up ahead of the head, we got messed up. |
| 340 | * |
| 341 | * In either case, truncate and restart at head. |
Arnaldo Carvalho de Melo | 04391de | 2011-01-15 10:40:59 -0200 | [diff] [blame] | 342 | */ |
Arnaldo Carvalho de Melo | 7bb4115 | 2011-01-29 09:08:13 -0200 | [diff] [blame] | 343 | int diff = head - old; |
| 344 | if (diff > md->mask / 2 || diff < 0) { |
| 345 | fprintf(stderr, "WARNING: failed to keep up with mmap data.\n"); |
| 346 | |
| 347 | /* |
| 348 | * head points to a known good entry, start there. |
| 349 | */ |
| 350 | old = head; |
| 351 | } |
Arnaldo Carvalho de Melo | 04391de | 2011-01-15 10:40:59 -0200 | [diff] [blame] | 352 | } |
| 353 | |
| 354 | if (old != head) { |
| 355 | size_t size; |
| 356 | |
Arnaldo Carvalho de Melo | 8115d60 | 2011-01-29 14:01:45 -0200 | [diff] [blame] | 357 | event = (union perf_event *)&data[old & md->mask]; |
Arnaldo Carvalho de Melo | 04391de | 2011-01-15 10:40:59 -0200 | [diff] [blame] | 358 | size = event->header.size; |
| 359 | |
| 360 | /* |
| 361 | * Event straddles the mmap boundary -- header should always |
| 362 | * be inside due to u64 alignment of output. |
| 363 | */ |
| 364 | if ((old & md->mask) + size != ((old + size) & md->mask)) { |
| 365 | unsigned int offset = old; |
| 366 | unsigned int len = min(sizeof(*event), size), cpy; |
| 367 | void *dst = &evlist->event_copy; |
| 368 | |
| 369 | do { |
| 370 | cpy = min(md->mask + 1 - (offset & md->mask), len); |
| 371 | memcpy(dst, &data[offset & md->mask], cpy); |
| 372 | offset += cpy; |
| 373 | dst += cpy; |
| 374 | len -= cpy; |
| 375 | } while (len); |
| 376 | |
| 377 | event = &evlist->event_copy; |
| 378 | } |
| 379 | |
| 380 | old += size; |
| 381 | } |
| 382 | |
| 383 | md->prev = old; |
Arnaldo Carvalho de Melo | 7bb4115 | 2011-01-29 09:08:13 -0200 | [diff] [blame] | 384 | |
| 385 | if (!evlist->overwrite) |
| 386 | perf_mmap__write_tail(md, old); |
| 387 | |
Arnaldo Carvalho de Melo | 04391de | 2011-01-15 10:40:59 -0200 | [diff] [blame] | 388 | return event; |
| 389 | } |
Arnaldo Carvalho de Melo | f8a9530 | 2011-01-30 10:46:46 -0200 | [diff] [blame] | 390 | |
Arnaldo Carvalho de Melo | 7e2ed09 | 2011-01-30 11:59:43 -0200 | [diff] [blame] | 391 | void perf_evlist__munmap(struct perf_evlist *evlist) |
Arnaldo Carvalho de Melo | f8a9530 | 2011-01-30 10:46:46 -0200 | [diff] [blame] | 392 | { |
Arnaldo Carvalho de Melo | aece948 | 2011-05-15 09:39:00 -0300 | [diff] [blame] | 393 | int i; |
Arnaldo Carvalho de Melo | f8a9530 | 2011-01-30 10:46:46 -0200 | [diff] [blame] | 394 | |
Arnaldo Carvalho de Melo | aece948 | 2011-05-15 09:39:00 -0300 | [diff] [blame] | 395 | for (i = 0; i < evlist->nr_mmaps; i++) { |
| 396 | if (evlist->mmap[i].base != NULL) { |
| 397 | munmap(evlist->mmap[i].base, evlist->mmap_len); |
| 398 | evlist->mmap[i].base = NULL; |
Arnaldo Carvalho de Melo | f8a9530 | 2011-01-30 10:46:46 -0200 | [diff] [blame] | 399 | } |
| 400 | } |
Arnaldo Carvalho de Melo | aece948 | 2011-05-15 09:39:00 -0300 | [diff] [blame] | 401 | |
| 402 | free(evlist->mmap); |
| 403 | evlist->mmap = NULL; |
Arnaldo Carvalho de Melo | f8a9530 | 2011-01-30 10:46:46 -0200 | [diff] [blame] | 404 | } |
| 405 | |
Arnaldo Carvalho de Melo | 806fb63 | 2011-11-29 08:05:52 -0200 | [diff] [blame] | 406 | static int perf_evlist__alloc_mmap(struct perf_evlist *evlist) |
Arnaldo Carvalho de Melo | f8a9530 | 2011-01-30 10:46:46 -0200 | [diff] [blame] | 407 | { |
Arnaldo Carvalho de Melo | a14bb7a | 2012-09-26 12:41:14 -0300 | [diff] [blame] | 408 | evlist->nr_mmaps = cpu_map__nr(evlist->cpus); |
| 409 | if (cpu_map__all(evlist->cpus)) |
Arnaldo Carvalho de Melo | aece948 | 2011-05-15 09:39:00 -0300 | [diff] [blame] | 410 | evlist->nr_mmaps = evlist->threads->nr; |
| 411 | evlist->mmap = zalloc(evlist->nr_mmaps * sizeof(struct perf_mmap)); |
Arnaldo Carvalho de Melo | f8a9530 | 2011-01-30 10:46:46 -0200 | [diff] [blame] | 412 | return evlist->mmap != NULL ? 0 : -ENOMEM; |
| 413 | } |
| 414 | |
Arnaldo Carvalho de Melo | bccdaba | 2011-06-02 10:39:43 -0300 | [diff] [blame] | 415 | static int __perf_evlist__mmap(struct perf_evlist *evlist, |
Arnaldo Carvalho de Melo | aece948 | 2011-05-15 09:39:00 -0300 | [diff] [blame] | 416 | int idx, int prot, int mask, int fd) |
Arnaldo Carvalho de Melo | f8a9530 | 2011-01-30 10:46:46 -0200 | [diff] [blame] | 417 | { |
Arnaldo Carvalho de Melo | aece948 | 2011-05-15 09:39:00 -0300 | [diff] [blame] | 418 | evlist->mmap[idx].prev = 0; |
| 419 | evlist->mmap[idx].mask = mask; |
| 420 | evlist->mmap[idx].base = mmap(NULL, evlist->mmap_len, prot, |
Arnaldo Carvalho de Melo | f8a9530 | 2011-01-30 10:46:46 -0200 | [diff] [blame] | 421 | MAP_SHARED, fd, 0); |
Nelson Elhage | 301b195 | 2011-12-19 08:39:30 -0500 | [diff] [blame] | 422 | if (evlist->mmap[idx].base == MAP_FAILED) { |
| 423 | evlist->mmap[idx].base = NULL; |
Arnaldo Carvalho de Melo | f8a9530 | 2011-01-30 10:46:46 -0200 | [diff] [blame] | 424 | return -1; |
Nelson Elhage | 301b195 | 2011-12-19 08:39:30 -0500 | [diff] [blame] | 425 | } |
Arnaldo Carvalho de Melo | f8a9530 | 2011-01-30 10:46:46 -0200 | [diff] [blame] | 426 | |
| 427 | perf_evlist__add_pollfd(evlist, fd); |
| 428 | return 0; |
| 429 | } |
| 430 | |
Arnaldo Carvalho de Melo | aece948 | 2011-05-15 09:39:00 -0300 | [diff] [blame] | 431 | static int perf_evlist__mmap_per_cpu(struct perf_evlist *evlist, int prot, int mask) |
| 432 | { |
| 433 | struct perf_evsel *evsel; |
| 434 | int cpu, thread; |
| 435 | |
| 436 | for (cpu = 0; cpu < evlist->cpus->nr; cpu++) { |
| 437 | int output = -1; |
| 438 | |
| 439 | for (thread = 0; thread < evlist->threads->nr; thread++) { |
| 440 | list_for_each_entry(evsel, &evlist->entries, node) { |
| 441 | int fd = FD(evsel, cpu, thread); |
| 442 | |
| 443 | if (output == -1) { |
| 444 | output = fd; |
Arnaldo Carvalho de Melo | bccdaba | 2011-06-02 10:39:43 -0300 | [diff] [blame] | 445 | if (__perf_evlist__mmap(evlist, cpu, |
Arnaldo Carvalho de Melo | aece948 | 2011-05-15 09:39:00 -0300 | [diff] [blame] | 446 | prot, mask, output) < 0) |
| 447 | goto out_unmap; |
| 448 | } else { |
| 449 | if (ioctl(fd, PERF_EVENT_IOC_SET_OUTPUT, output) != 0) |
| 450 | goto out_unmap; |
| 451 | } |
| 452 | |
| 453 | if ((evsel->attr.read_format & PERF_FORMAT_ID) && |
| 454 | perf_evlist__id_add_fd(evlist, evsel, cpu, thread, fd) < 0) |
| 455 | goto out_unmap; |
| 456 | } |
| 457 | } |
| 458 | } |
| 459 | |
| 460 | return 0; |
| 461 | |
| 462 | out_unmap: |
| 463 | for (cpu = 0; cpu < evlist->cpus->nr; cpu++) { |
| 464 | if (evlist->mmap[cpu].base != NULL) { |
| 465 | munmap(evlist->mmap[cpu].base, evlist->mmap_len); |
| 466 | evlist->mmap[cpu].base = NULL; |
| 467 | } |
| 468 | } |
| 469 | return -1; |
| 470 | } |
| 471 | |
| 472 | static int perf_evlist__mmap_per_thread(struct perf_evlist *evlist, int prot, int mask) |
| 473 | { |
| 474 | struct perf_evsel *evsel; |
| 475 | int thread; |
| 476 | |
| 477 | for (thread = 0; thread < evlist->threads->nr; thread++) { |
| 478 | int output = -1; |
| 479 | |
| 480 | list_for_each_entry(evsel, &evlist->entries, node) { |
| 481 | int fd = FD(evsel, 0, thread); |
| 482 | |
| 483 | if (output == -1) { |
| 484 | output = fd; |
Arnaldo Carvalho de Melo | bccdaba | 2011-06-02 10:39:43 -0300 | [diff] [blame] | 485 | if (__perf_evlist__mmap(evlist, thread, |
Arnaldo Carvalho de Melo | aece948 | 2011-05-15 09:39:00 -0300 | [diff] [blame] | 486 | prot, mask, output) < 0) |
| 487 | goto out_unmap; |
| 488 | } else { |
| 489 | if (ioctl(fd, PERF_EVENT_IOC_SET_OUTPUT, output) != 0) |
| 490 | goto out_unmap; |
| 491 | } |
| 492 | |
| 493 | if ((evsel->attr.read_format & PERF_FORMAT_ID) && |
| 494 | perf_evlist__id_add_fd(evlist, evsel, 0, thread, fd) < 0) |
| 495 | goto out_unmap; |
| 496 | } |
| 497 | } |
| 498 | |
| 499 | return 0; |
| 500 | |
| 501 | out_unmap: |
| 502 | for (thread = 0; thread < evlist->threads->nr; thread++) { |
| 503 | if (evlist->mmap[thread].base != NULL) { |
| 504 | munmap(evlist->mmap[thread].base, evlist->mmap_len); |
| 505 | evlist->mmap[thread].base = NULL; |
| 506 | } |
| 507 | } |
| 508 | return -1; |
| 509 | } |
| 510 | |
Arnaldo Carvalho de Melo | f8a9530 | 2011-01-30 10:46:46 -0200 | [diff] [blame] | 511 | /** perf_evlist__mmap - Create per cpu maps to receive events |
| 512 | * |
| 513 | * @evlist - list of events |
Arnaldo Carvalho de Melo | f8a9530 | 2011-01-30 10:46:46 -0200 | [diff] [blame] | 514 | * @pages - map length in pages |
| 515 | * @overwrite - overwrite older events? |
| 516 | * |
| 517 | * If overwrite is false the user needs to signal event consuption using: |
| 518 | * |
| 519 | * struct perf_mmap *m = &evlist->mmap[cpu]; |
| 520 | * unsigned int head = perf_mmap__read_head(m); |
| 521 | * |
| 522 | * perf_mmap__write_tail(m, head) |
Arnaldo Carvalho de Melo | 7e2ed09 | 2011-01-30 11:59:43 -0200 | [diff] [blame] | 523 | * |
| 524 | * Using perf_evlist__read_on_cpu does this automatically. |
Arnaldo Carvalho de Melo | f8a9530 | 2011-01-30 10:46:46 -0200 | [diff] [blame] | 525 | */ |
Arnaldo Carvalho de Melo | 50a682c | 2011-11-09 09:10:47 -0200 | [diff] [blame] | 526 | int perf_evlist__mmap(struct perf_evlist *evlist, unsigned int pages, |
| 527 | bool overwrite) |
Arnaldo Carvalho de Melo | f8a9530 | 2011-01-30 10:46:46 -0200 | [diff] [blame] | 528 | { |
Arnaldo Carvalho de Melo | aece948 | 2011-05-15 09:39:00 -0300 | [diff] [blame] | 529 | struct perf_evsel *evsel; |
Arnaldo Carvalho de Melo | 7e2ed09 | 2011-01-30 11:59:43 -0200 | [diff] [blame] | 530 | const struct cpu_map *cpus = evlist->cpus; |
| 531 | const struct thread_map *threads = evlist->threads; |
Arnaldo Carvalho de Melo | 50a682c | 2011-11-09 09:10:47 -0200 | [diff] [blame] | 532 | int prot = PROT_READ | (overwrite ? 0 : PROT_WRITE), mask; |
| 533 | |
| 534 | /* 512 kiB: default amount of unprivileged mlocked memory */ |
| 535 | if (pages == UINT_MAX) |
| 536 | pages = (512 * 1024) / page_size; |
Nelson Elhage | 41d0d93 | 2011-12-19 08:39:32 -0500 | [diff] [blame] | 537 | else if (!is_power_of_2(pages)) |
| 538 | return -EINVAL; |
Arnaldo Carvalho de Melo | 50a682c | 2011-11-09 09:10:47 -0200 | [diff] [blame] | 539 | |
| 540 | mask = pages * page_size - 1; |
Arnaldo Carvalho de Melo | f8a9530 | 2011-01-30 10:46:46 -0200 | [diff] [blame] | 541 | |
Arnaldo Carvalho de Melo | 7e2ed09 | 2011-01-30 11:59:43 -0200 | [diff] [blame] | 542 | if (evlist->mmap == NULL && perf_evlist__alloc_mmap(evlist) < 0) |
Arnaldo Carvalho de Melo | f8a9530 | 2011-01-30 10:46:46 -0200 | [diff] [blame] | 543 | return -ENOMEM; |
| 544 | |
Arnaldo Carvalho de Melo | 7e2ed09 | 2011-01-30 11:59:43 -0200 | [diff] [blame] | 545 | if (evlist->pollfd == NULL && perf_evlist__alloc_pollfd(evlist) < 0) |
Arnaldo Carvalho de Melo | f8a9530 | 2011-01-30 10:46:46 -0200 | [diff] [blame] | 546 | return -ENOMEM; |
| 547 | |
| 548 | evlist->overwrite = overwrite; |
| 549 | evlist->mmap_len = (pages + 1) * page_size; |
Arnaldo Carvalho de Melo | f8a9530 | 2011-01-30 10:46:46 -0200 | [diff] [blame] | 550 | |
| 551 | list_for_each_entry(evsel, &evlist->entries, node) { |
| 552 | if ((evsel->attr.read_format & PERF_FORMAT_ID) && |
Arnaldo Carvalho de Melo | a91e543 | 2011-03-10 11:15:54 -0300 | [diff] [blame] | 553 | evsel->sample_id == NULL && |
Arnaldo Carvalho de Melo | a14bb7a | 2012-09-26 12:41:14 -0300 | [diff] [blame] | 554 | perf_evsel__alloc_id(evsel, cpu_map__nr(cpus), threads->nr) < 0) |
Arnaldo Carvalho de Melo | f8a9530 | 2011-01-30 10:46:46 -0200 | [diff] [blame] | 555 | return -ENOMEM; |
Arnaldo Carvalho de Melo | f8a9530 | 2011-01-30 10:46:46 -0200 | [diff] [blame] | 556 | } |
| 557 | |
Arnaldo Carvalho de Melo | a14bb7a | 2012-09-26 12:41:14 -0300 | [diff] [blame] | 558 | if (cpu_map__all(cpus)) |
Arnaldo Carvalho de Melo | aece948 | 2011-05-15 09:39:00 -0300 | [diff] [blame] | 559 | return perf_evlist__mmap_per_thread(evlist, prot, mask); |
Arnaldo Carvalho de Melo | f8a9530 | 2011-01-30 10:46:46 -0200 | [diff] [blame] | 560 | |
Arnaldo Carvalho de Melo | aece948 | 2011-05-15 09:39:00 -0300 | [diff] [blame] | 561 | return perf_evlist__mmap_per_cpu(evlist, prot, mask); |
Arnaldo Carvalho de Melo | f8a9530 | 2011-01-30 10:46:46 -0200 | [diff] [blame] | 562 | } |
Arnaldo Carvalho de Melo | 7e2ed09 | 2011-01-30 11:59:43 -0200 | [diff] [blame] | 563 | |
Namhyung Kim | b809ac1 | 2012-04-26 14:15:19 +0900 | [diff] [blame] | 564 | int perf_evlist__create_maps(struct perf_evlist *evlist, |
| 565 | struct perf_target *target) |
Arnaldo Carvalho de Melo | 7e2ed09 | 2011-01-30 11:59:43 -0200 | [diff] [blame] | 566 | { |
Namhyung Kim | b809ac1 | 2012-04-26 14:15:19 +0900 | [diff] [blame] | 567 | evlist->threads = thread_map__new_str(target->pid, target->tid, |
| 568 | target->uid); |
Arnaldo Carvalho de Melo | 7e2ed09 | 2011-01-30 11:59:43 -0200 | [diff] [blame] | 569 | |
| 570 | if (evlist->threads == NULL) |
| 571 | return -1; |
| 572 | |
Namhyung Kim | 879d77d | 2012-05-16 18:45:48 +0900 | [diff] [blame] | 573 | if (perf_target__has_task(target)) |
Namhyung Kim | d67356e | 2012-05-07 14:09:03 +0900 | [diff] [blame] | 574 | evlist->cpus = cpu_map__dummy_new(); |
Namhyung Kim | d1cb9fc | 2012-05-16 18:45:49 +0900 | [diff] [blame] | 575 | else if (!perf_target__has_cpu(target) && !target->uses_mmap) |
| 576 | evlist->cpus = cpu_map__dummy_new(); |
Namhyung Kim | 879d77d | 2012-05-16 18:45:48 +0900 | [diff] [blame] | 577 | else |
| 578 | evlist->cpus = cpu_map__new(target->cpu_list); |
Arnaldo Carvalho de Melo | 7e2ed09 | 2011-01-30 11:59:43 -0200 | [diff] [blame] | 579 | |
| 580 | if (evlist->cpus == NULL) |
| 581 | goto out_delete_threads; |
| 582 | |
| 583 | return 0; |
| 584 | |
| 585 | out_delete_threads: |
| 586 | thread_map__delete(evlist->threads); |
| 587 | return -1; |
| 588 | } |
| 589 | |
| 590 | void perf_evlist__delete_maps(struct perf_evlist *evlist) |
| 591 | { |
| 592 | cpu_map__delete(evlist->cpus); |
| 593 | thread_map__delete(evlist->threads); |
| 594 | evlist->cpus = NULL; |
| 595 | evlist->threads = NULL; |
| 596 | } |
Frederic Weisbecker | 0a10247 | 2011-02-26 04:51:54 +0100 | [diff] [blame] | 597 | |
Arnaldo Carvalho de Melo | 1491a63 | 2012-09-26 14:43:13 -0300 | [diff] [blame] | 598 | int perf_evlist__apply_filters(struct perf_evlist *evlist) |
Frederic Weisbecker | 0a10247 | 2011-02-26 04:51:54 +0100 | [diff] [blame] | 599 | { |
Frederic Weisbecker | 0a10247 | 2011-02-26 04:51:54 +0100 | [diff] [blame] | 600 | struct perf_evsel *evsel; |
Arnaldo Carvalho de Melo | 745cefc | 2012-09-26 15:07:39 -0300 | [diff] [blame] | 601 | int err = 0; |
| 602 | const int ncpus = cpu_map__nr(evlist->cpus), |
| 603 | nthreads = evlist->threads->nr; |
Frederic Weisbecker | 0a10247 | 2011-02-26 04:51:54 +0100 | [diff] [blame] | 604 | |
| 605 | list_for_each_entry(evsel, &evlist->entries, node) { |
Arnaldo Carvalho de Melo | 745cefc | 2012-09-26 15:07:39 -0300 | [diff] [blame] | 606 | if (evsel->filter == NULL) |
Frederic Weisbecker | 0a10247 | 2011-02-26 04:51:54 +0100 | [diff] [blame] | 607 | continue; |
Arnaldo Carvalho de Melo | 745cefc | 2012-09-26 15:07:39 -0300 | [diff] [blame] | 608 | |
| 609 | err = perf_evsel__set_filter(evsel, ncpus, nthreads, evsel->filter); |
| 610 | if (err) |
| 611 | break; |
Frederic Weisbecker | 0a10247 | 2011-02-26 04:51:54 +0100 | [diff] [blame] | 612 | } |
| 613 | |
Arnaldo Carvalho de Melo | 745cefc | 2012-09-26 15:07:39 -0300 | [diff] [blame] | 614 | return err; |
| 615 | } |
| 616 | |
| 617 | int perf_evlist__set_filter(struct perf_evlist *evlist, const char *filter) |
| 618 | { |
| 619 | struct perf_evsel *evsel; |
| 620 | int err = 0; |
| 621 | const int ncpus = cpu_map__nr(evlist->cpus), |
| 622 | nthreads = evlist->threads->nr; |
| 623 | |
| 624 | list_for_each_entry(evsel, &evlist->entries, node) { |
| 625 | err = perf_evsel__set_filter(evsel, ncpus, nthreads, filter); |
| 626 | if (err) |
| 627 | break; |
| 628 | } |
| 629 | |
| 630 | return err; |
Frederic Weisbecker | 0a10247 | 2011-02-26 04:51:54 +0100 | [diff] [blame] | 631 | } |
Frederic Weisbecker | 7442996 | 2011-05-21 17:49:00 +0200 | [diff] [blame] | 632 | |
Arnaldo Carvalho de Melo | 0c21f73 | 2012-08-14 16:42:15 -0300 | [diff] [blame] | 633 | bool perf_evlist__valid_sample_type(struct perf_evlist *evlist) |
Frederic Weisbecker | 7442996 | 2011-05-21 17:49:00 +0200 | [diff] [blame] | 634 | { |
Arnaldo Carvalho de Melo | 0c21f73 | 2012-08-14 16:42:15 -0300 | [diff] [blame] | 635 | struct perf_evsel *first = perf_evlist__first(evlist), *pos = first; |
Arnaldo Carvalho de Melo | c2a7065 | 2011-06-02 11:04:54 -0300 | [diff] [blame] | 636 | |
| 637 | list_for_each_entry_continue(pos, &evlist->entries, node) { |
| 638 | if (first->attr.sample_type != pos->attr.sample_type) |
| 639 | return false; |
Frederic Weisbecker | 7442996 | 2011-05-21 17:49:00 +0200 | [diff] [blame] | 640 | } |
| 641 | |
Arnaldo Carvalho de Melo | c2a7065 | 2011-06-02 11:04:54 -0300 | [diff] [blame] | 642 | return true; |
| 643 | } |
| 644 | |
Arnaldo Carvalho de Melo | 0c21f73 | 2012-08-14 16:42:15 -0300 | [diff] [blame] | 645 | u64 perf_evlist__sample_type(struct perf_evlist *evlist) |
Arnaldo Carvalho de Melo | c2a7065 | 2011-06-02 11:04:54 -0300 | [diff] [blame] | 646 | { |
Arnaldo Carvalho de Melo | 0c21f73 | 2012-08-14 16:42:15 -0300 | [diff] [blame] | 647 | struct perf_evsel *first = perf_evlist__first(evlist); |
Arnaldo Carvalho de Melo | c2a7065 | 2011-06-02 11:04:54 -0300 | [diff] [blame] | 648 | return first->attr.sample_type; |
| 649 | } |
| 650 | |
Arnaldo Carvalho de Melo | 0c21f73 | 2012-08-14 16:42:15 -0300 | [diff] [blame] | 651 | u16 perf_evlist__id_hdr_size(struct perf_evlist *evlist) |
Arnaldo Carvalho de Melo | 81e36bf | 2011-11-11 22:28:50 -0200 | [diff] [blame] | 652 | { |
Arnaldo Carvalho de Melo | 0c21f73 | 2012-08-14 16:42:15 -0300 | [diff] [blame] | 653 | struct perf_evsel *first = perf_evlist__first(evlist); |
Arnaldo Carvalho de Melo | 81e36bf | 2011-11-11 22:28:50 -0200 | [diff] [blame] | 654 | struct perf_sample *data; |
| 655 | u64 sample_type; |
| 656 | u16 size = 0; |
| 657 | |
Arnaldo Carvalho de Melo | 81e36bf | 2011-11-11 22:28:50 -0200 | [diff] [blame] | 658 | if (!first->attr.sample_id_all) |
| 659 | goto out; |
| 660 | |
| 661 | sample_type = first->attr.sample_type; |
| 662 | |
| 663 | if (sample_type & PERF_SAMPLE_TID) |
| 664 | size += sizeof(data->tid) * 2; |
| 665 | |
| 666 | if (sample_type & PERF_SAMPLE_TIME) |
| 667 | size += sizeof(data->time); |
| 668 | |
| 669 | if (sample_type & PERF_SAMPLE_ID) |
| 670 | size += sizeof(data->id); |
| 671 | |
| 672 | if (sample_type & PERF_SAMPLE_STREAM_ID) |
| 673 | size += sizeof(data->stream_id); |
| 674 | |
| 675 | if (sample_type & PERF_SAMPLE_CPU) |
| 676 | size += sizeof(data->cpu) * 2; |
| 677 | out: |
| 678 | return size; |
| 679 | } |
| 680 | |
Arnaldo Carvalho de Melo | 0c21f73 | 2012-08-14 16:42:15 -0300 | [diff] [blame] | 681 | bool perf_evlist__valid_sample_id_all(struct perf_evlist *evlist) |
Arnaldo Carvalho de Melo | c2a7065 | 2011-06-02 11:04:54 -0300 | [diff] [blame] | 682 | { |
Arnaldo Carvalho de Melo | 0c21f73 | 2012-08-14 16:42:15 -0300 | [diff] [blame] | 683 | struct perf_evsel *first = perf_evlist__first(evlist), *pos = first; |
Arnaldo Carvalho de Melo | c2a7065 | 2011-06-02 11:04:54 -0300 | [diff] [blame] | 684 | |
| 685 | list_for_each_entry_continue(pos, &evlist->entries, node) { |
| 686 | if (first->attr.sample_id_all != pos->attr.sample_id_all) |
| 687 | return false; |
| 688 | } |
| 689 | |
| 690 | return true; |
Frederic Weisbecker | 7442996 | 2011-05-21 17:49:00 +0200 | [diff] [blame] | 691 | } |
| 692 | |
Arnaldo Carvalho de Melo | 0c21f73 | 2012-08-14 16:42:15 -0300 | [diff] [blame] | 693 | bool perf_evlist__sample_id_all(struct perf_evlist *evlist) |
Frederic Weisbecker | 7442996 | 2011-05-21 17:49:00 +0200 | [diff] [blame] | 694 | { |
Arnaldo Carvalho de Melo | 0c21f73 | 2012-08-14 16:42:15 -0300 | [diff] [blame] | 695 | struct perf_evsel *first = perf_evlist__first(evlist); |
Arnaldo Carvalho de Melo | c2a7065 | 2011-06-02 11:04:54 -0300 | [diff] [blame] | 696 | return first->attr.sample_id_all; |
Frederic Weisbecker | 7442996 | 2011-05-21 17:49:00 +0200 | [diff] [blame] | 697 | } |
Arnaldo Carvalho de Melo | 81cce8d | 2011-10-05 19:11:32 -0300 | [diff] [blame] | 698 | |
| 699 | void perf_evlist__set_selected(struct perf_evlist *evlist, |
| 700 | struct perf_evsel *evsel) |
| 701 | { |
| 702 | evlist->selected = evsel; |
| 703 | } |
Arnaldo Carvalho de Melo | 727ab04 | 2011-10-25 10:42:19 -0200 | [diff] [blame] | 704 | |
Jiri Olsa | 6a4bb04 | 2012-08-08 12:22:36 +0200 | [diff] [blame] | 705 | int perf_evlist__open(struct perf_evlist *evlist) |
Arnaldo Carvalho de Melo | 727ab04 | 2011-10-25 10:42:19 -0200 | [diff] [blame] | 706 | { |
Jiri Olsa | 6a4bb04 | 2012-08-08 12:22:36 +0200 | [diff] [blame] | 707 | struct perf_evsel *evsel; |
Arnaldo Carvalho de Melo | 727ab04 | 2011-10-25 10:42:19 -0200 | [diff] [blame] | 708 | int err, ncpus, nthreads; |
| 709 | |
Arnaldo Carvalho de Melo | 727ab04 | 2011-10-25 10:42:19 -0200 | [diff] [blame] | 710 | list_for_each_entry(evsel, &evlist->entries, node) { |
Jiri Olsa | 6a4bb04 | 2012-08-08 12:22:36 +0200 | [diff] [blame] | 711 | err = perf_evsel__open(evsel, evlist->cpus, evlist->threads); |
Arnaldo Carvalho de Melo | 727ab04 | 2011-10-25 10:42:19 -0200 | [diff] [blame] | 712 | if (err < 0) |
| 713 | goto out_err; |
| 714 | } |
| 715 | |
| 716 | return 0; |
| 717 | out_err: |
| 718 | ncpus = evlist->cpus ? evlist->cpus->nr : 1; |
| 719 | nthreads = evlist->threads ? evlist->threads->nr : 1; |
| 720 | |
| 721 | list_for_each_entry_reverse(evsel, &evlist->entries, node) |
| 722 | perf_evsel__close(evsel, ncpus, nthreads); |
| 723 | |
Namhyung Kim | 41c21a6 | 2012-02-23 12:13:36 +0900 | [diff] [blame] | 724 | errno = -err; |
Arnaldo Carvalho de Melo | 727ab04 | 2011-10-25 10:42:19 -0200 | [diff] [blame] | 725 | return err; |
| 726 | } |
Arnaldo Carvalho de Melo | 35b9d88 | 2011-11-09 08:47:15 -0200 | [diff] [blame] | 727 | |
| 728 | int perf_evlist__prepare_workload(struct perf_evlist *evlist, |
| 729 | struct perf_record_opts *opts, |
| 730 | const char *argv[]) |
| 731 | { |
| 732 | int child_ready_pipe[2], go_pipe[2]; |
| 733 | char bf; |
| 734 | |
| 735 | if (pipe(child_ready_pipe) < 0) { |
| 736 | perror("failed to create 'ready' pipe"); |
| 737 | return -1; |
| 738 | } |
| 739 | |
| 740 | if (pipe(go_pipe) < 0) { |
| 741 | perror("failed to create 'go' pipe"); |
| 742 | goto out_close_ready_pipe; |
| 743 | } |
| 744 | |
| 745 | evlist->workload.pid = fork(); |
| 746 | if (evlist->workload.pid < 0) { |
| 747 | perror("failed to fork"); |
| 748 | goto out_close_pipes; |
| 749 | } |
| 750 | |
| 751 | if (!evlist->workload.pid) { |
| 752 | if (opts->pipe_output) |
| 753 | dup2(2, 1); |
| 754 | |
| 755 | close(child_ready_pipe[0]); |
| 756 | close(go_pipe[1]); |
| 757 | fcntl(go_pipe[0], F_SETFD, FD_CLOEXEC); |
| 758 | |
| 759 | /* |
| 760 | * Do a dummy execvp to get the PLT entry resolved, |
| 761 | * so we avoid the resolver overhead on the real |
| 762 | * execvp call. |
| 763 | */ |
| 764 | execvp("", (char **)argv); |
| 765 | |
| 766 | /* |
| 767 | * Tell the parent we're ready to go |
| 768 | */ |
| 769 | close(child_ready_pipe[1]); |
| 770 | |
| 771 | /* |
| 772 | * Wait until the parent tells us to go. |
| 773 | */ |
| 774 | if (read(go_pipe[0], &bf, 1) == -1) |
| 775 | perror("unable to read pipe"); |
| 776 | |
| 777 | execvp(argv[0], (char **)argv); |
| 778 | |
| 779 | perror(argv[0]); |
| 780 | kill(getppid(), SIGUSR1); |
| 781 | exit(-1); |
| 782 | } |
| 783 | |
Namhyung Kim | d67356e | 2012-05-07 14:09:03 +0900 | [diff] [blame] | 784 | if (perf_target__none(&opts->target)) |
Arnaldo Carvalho de Melo | 35b9d88 | 2011-11-09 08:47:15 -0200 | [diff] [blame] | 785 | evlist->threads->map[0] = evlist->workload.pid; |
| 786 | |
| 787 | close(child_ready_pipe[1]); |
| 788 | close(go_pipe[0]); |
| 789 | /* |
| 790 | * wait for child to settle |
| 791 | */ |
| 792 | if (read(child_ready_pipe[0], &bf, 1) == -1) { |
| 793 | perror("unable to read pipe"); |
| 794 | goto out_close_pipes; |
| 795 | } |
| 796 | |
| 797 | evlist->workload.cork_fd = go_pipe[1]; |
| 798 | close(child_ready_pipe[0]); |
| 799 | return 0; |
| 800 | |
| 801 | out_close_pipes: |
| 802 | close(go_pipe[0]); |
| 803 | close(go_pipe[1]); |
| 804 | out_close_ready_pipe: |
| 805 | close(child_ready_pipe[0]); |
| 806 | close(child_ready_pipe[1]); |
| 807 | return -1; |
| 808 | } |
| 809 | |
| 810 | int perf_evlist__start_workload(struct perf_evlist *evlist) |
| 811 | { |
| 812 | if (evlist->workload.cork_fd > 0) { |
| 813 | /* |
| 814 | * Remove the cork, let it rip! |
| 815 | */ |
| 816 | return close(evlist->workload.cork_fd); |
| 817 | } |
| 818 | |
| 819 | return 0; |
| 820 | } |
Arnaldo Carvalho de Melo | cb0b29e | 2012-08-02 11:42:57 -0300 | [diff] [blame] | 821 | |
Arnaldo Carvalho de Melo | a3f698f | 2012-08-02 12:23:46 -0300 | [diff] [blame] | 822 | int perf_evlist__parse_sample(struct perf_evlist *evlist, union perf_event *event, |
Arnaldo Carvalho de Melo | 0807d2d | 2012-09-26 12:48:18 -0300 | [diff] [blame] | 823 | struct perf_sample *sample) |
Arnaldo Carvalho de Melo | cb0b29e | 2012-08-02 11:42:57 -0300 | [diff] [blame] | 824 | { |
Arnaldo Carvalho de Melo | 0c21f73 | 2012-08-14 16:42:15 -0300 | [diff] [blame] | 825 | struct perf_evsel *evsel = perf_evlist__first(evlist); |
Arnaldo Carvalho de Melo | 0807d2d | 2012-09-26 12:48:18 -0300 | [diff] [blame] | 826 | return perf_evsel__parse_sample(evsel, event, sample); |
Arnaldo Carvalho de Melo | cb0b29e | 2012-08-02 11:42:57 -0300 | [diff] [blame] | 827 | } |
Arnaldo Carvalho de Melo | 78f067b | 2012-09-06 14:54:11 -0300 | [diff] [blame] | 828 | |
| 829 | size_t perf_evlist__fprintf(struct perf_evlist *evlist, FILE *fp) |
| 830 | { |
| 831 | struct perf_evsel *evsel; |
| 832 | size_t printed = 0; |
| 833 | |
| 834 | list_for_each_entry(evsel, &evlist->entries, node) { |
| 835 | printed += fprintf(fp, "%s%s", evsel->idx ? ", " : "", |
| 836 | perf_evsel__name(evsel)); |
| 837 | } |
| 838 | |
| 839 | return printed + fprintf(fp, "\n");; |
| 840 | } |